By Eric Yep 
 

Crude-oil futures were supported by last week's surprise interest rate cuts by China even as markets brace for the highly anticipated meeting of the Organization of the Petroleum Exporting countries later this week.

On the New York Mercantile Exchange, light, sweet crude futures for delivery in January traded at $76.68 a barrel at 0323 GMT, up $0.17 in the Globex electronic session. January Brent crude on London's ICE Futures exchange rose $0.25 to $80.61 a barrel.

Late Friday, China's central bank cut interest rates for the first time in more than two years to boost economic growth, which is positive for oil demand.

Chinese oil demand growth has been recovering since August, with October demand holding above the 10-million-barrels-a-day mark for the second month in a row, Barclays analyst Miswin Mahesh said.

The world's second-largest oil consumer used 5.3% more diesel in October from a year earlier, which is significant because diesel accounts for a third of total oil demand and is the largest chunk of the barrel. Demand for another key fuel--gasoline--grew by almost 12% in October.

However, any further momentum in demand faces challenges. "In our view, although the data is encouraging, there are still significant headwinds to Chinese oil demand growth recovering to previous levels," Mr. Mahesh said.

Chinese exports of petroleum products are also near record levels on the back of wider oil refining margins, low oil prices, the startup of new refineries and new fuel export licenses, according to Citi Research.

Today's key event is the expiry of Iran's interim nuclear agreement. The U.S. and other world powers have indicated that it will be virtually impossible to reach a deal by tonight's deadline, and options include a potential extension to the negotiations.

A final agreement would have meant that western sanctions on Iranian oil production are lifted sooner and global oil supply increases, further pushing down oil prices.

This week's day of reckoning will be OPEC's meeting in Vienna on Thursday. As energy consultant Johannes Benigni at JBC Asia puts it--no OPEC meeting for a long time has been preceded by such amounts of speculation and conspiracy theories.

Whether OPEC, and most importantly Saudi Arabia, decides to cut oil production and the extent of such a cut, will likely drive oil price movement for the remainder of this year.

Nymex reformulated gasoline blendstock for December--the benchmark gasoline contract--rose 33 points to $2.0598 a gallon, while December diesel traded at $2.4050, 5 points higher.

ICE gasoil for December changed hands at $706.50 a metric ton, up $2.25 from Friday's settlement.

Write to Eric Yep at eric.yep@wsj.com